Reconfigurable Intelligent Surface Aided Space Shift Keying With Imperfect CSI
Xusheng Zhu, Wen Chen, Qingqing Wu, Zhendong Li, Jun Li, Shunqing, Zhang, and Ming Ding

TL;DR
This paper analyzes the performance of RIS-aided spatial shift keying systems under imperfect CSI, deriving error probability expressions for intelligent and blind reflection modes, and validating results through simulations.
Contribution
It provides novel analytical expressions for ABEP in RIS-SSK systems with imperfect CSI, including both intelligent and blind reflection schemes, and examines discrete phase shift effects.
Findings
Derived ABEP expressions for intelligent RIS-SSK with imperfect CSI.
Developed closed-form and asymptotic ABEP for blind RIS-SSK.
Validated analytical results with extensive Monte Carlo simulations.
Abstract
In this paper, we investigate the performance of reconfigurable intelligent surface (RIS)-aided spatial shift keying (SSK) wireless communication systems with imperfect channel state information (CSI). Specifically, we study the average bit error probability (ABEP) of two RIS-SSK systems based on intelligent reflection and blind reflection modes. For the intelligent RIS-SSK scheme, we first derive the conditional pairwise error probability of the composite channel through maximum likelihood (ML) detection. Subsequently, we derive the probability density function of the combined channel. Due to the intricacies of the composite channel formulation, an exact closed-form ABEP expression is unattainable through direct derivation. To this end, we resort to employing the Gaussian-Chebyshev quadrature method to estimate the results. Additionally, we employ Q-function approximation to derive the…
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Taxonomy
TopicsAdvanced Wireless Communication Technologies · Satellite Communication Systems · IoT Networks and Protocols
